Joule Heating of Carbon Fibers and Their Composites in Radio‐Frequency Fields

Dasari, Smita Shivraj; Sarmah, Anubhav; Mee, Raymond D.; Khalfaoui, Aida N.; Green, Micah J.

doi:10.1002/adem.202201631

Cited by 7 publications

(2 citation statements)

References 38 publications

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“…[26,27] Interestingly, our group has demonstrated a separate effect of exposing carbon materials to such non-contact electromagnetic fields: Joule heating. [28][29][30] Carbon materials, such as graphite, CNTs, graphene oxide, laser-induced graphene, carbon fibers, and carbon black, heat up when exposed to electromagnetic fields. [31][32][33][34][35] When such susceptors are added to thermosetting resins and exposed to radio-frequency (RF) fields, these materials heat up and transfer heat to the surrounding matrix.…”

Section: Introductionmentioning

confidence: 99%

Competing Effects of Radio Frequency Fields on Carbon Nanotube/Resin Systems: Alignment versus Heating

Sarmah

Mee

Arole

et al. 2023

Macro Materials & Eng

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This work shows that radio‐frequency (RF) fields can simultaneously align carbon nanotubes (CNTs) dispersed in a resin and induce Joule heating to cure the resin. The timescales of alignment and curing using RF heating are numerically computed and compared at different field strengths in order to determine a temperature where alignment happens before the matrix crosslinks. Composites are experimentally fabricated at the desired target temperature and are optically analyzed and quantified; the CNT network is successfully aligned in the direction of the applied electric field. This methodology can be used to create composites where the local alignment can be varied across the sample. Composites fabricated using RF fields have higher electrical conductivity in the direction of the aligned CNTs than an oven‐cured, randomly aligned sample. Also, RF‐cured nanocomposites exhibit higher tensile strength and modulus in the direction of alignment compared to an oven‐cured sample. Finally, it is further demonstrated how this methodology can be coupled with a direct ink writing additive manufacturing process to induce alignment in any desired direction, even orthogonal to the shear forces in the extrusion direction.

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Section: Introductionmentioning

confidence: 99%

Competing Effects of Radio Frequency Fields on Carbon Nanotube/Resin Systems: Alignment versus Heating

Sarmah

Mee

Arole

et al. 2023

Macro Materials & Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…In addition to the optimization of process parameters of the planar printing, some researchers have taken alternative approaches to enhance the interfacial properties between layers, such as laser-assisted heating [22], radio frequency technique [36], and plasma treatment [37]. To further improve the interlayer performance, the establishment of non-planar interfaces is a novel technique.…”

Section: Introductionmentioning

confidence: 99%

Improved Interlayer Performance of Short Carbon Fiber Reinforced Composites with Bio-Inspired Structured Interfaces

Zhang,

yang

et al. 2023

Preprint

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Radio frequency-assisted curing of on-chip printed CNT/silicone heatsinks produced by material extrusion 3D printing

Tran,

Sarmah,

Harkin

et al. 2023

Additive Manufacturing

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Joule Heating of Carbon Fibers and Their Composites in Radio‐Frequency Fields

Abstract: The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adem.202201631.

Cited by 7 publications

References 38 publications

Competing Effects of Radio Frequency Fields on Carbon Nanotube/Resin Systems: Alignment versus Heating

Competing Effects of Radio Frequency Fields on Carbon Nanotube/Resin Systems: Alignment versus Heating

Improved Interlayer Performance of Short Carbon Fiber Reinforced Composites with Bio-Inspired Structured Interfaces

Radio frequency-assisted curing of on-chip printed CNT/silicone heatsinks produced by material extrusion 3D printing

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